USRE6252E - Improvement in apparatus for stretching leather - Google Patents

Description

. No'6,252 n'eissuedlanyze,18-75..

S D. CAST-LE.

Apparatus for 'Stretch-ing Leather.

' UNITED STATES PATENT Orrrcn.

SAMUEL D. CASTLE, OF-BBIDGEPORT, CONNECTICUT.

IMPROVEMENT m APPARATUS FOR star-roams LEATHER.

Specification forming part of Letters Patent'No. 123,979, dated February 27, 1872 ;.-reissue No. 6,252, dated I January 26, 1875; application filed November 14, 187 i.

To all whom it may concern:

Be it known that I, SAMUEL l). CASTLE, of

Bridgeport, in the countyof Fairfield and State of Connecticudhave invented a new Apparatus for Stretching Leather; and I do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawin gsconstitute part,

' side, as the case may be.

The invention consists prill'cipall'y'ina frame composed of two horizontal bars and two,vertical bars,--'each made adjustable, so as to extend or contract the frame, two opposite bars working through slots in the other two, and the latter two open, so as to allow the air to circulate between the sides of leather placed upon opposite sides of the frame, as more fully hereinafter described.

A is the upper or principal bar, and is longer than the back line of the side to be dried or stretched. C is a similar but shorter bar, parallel to the bar A, or nearly so. B B are the two end bars, which complete the general frame. These vertical bars B B are made in two parts, B B, as seen in Fig. 2, or so as to leave a space, slot, or opening nearly their entire length. The bars A C are each set in these slots, but so that all the bars shall be free to movethat is, so that the bars B B may be moved toward or from each other and the bar C toward or from the bar A. Tothus move the bar C there is attached to that bar C'a stud, D, connected to a lever, G, the fulcrum of which is on the bar A, so that by hearing down upon the lever (if it be a lever of the order shown) the bar C will be forced from the bar A, and vice versa. In order that the end pieces or bars B may be spread at the same time the bar C is moved from the bar junction A, a rod, E, is jointed to each of the parts B, also jointed to the stud D, the point of connection between the rods and stud, above the connection with the pieces B. Hence the two rods E form a toggle, and, as the stud descends with the bar- C, the ends B are accordingly forced asunder, andvice versa. If the stud'be not'thinner than the end pieces it must be slotted in similar manner to the end pieces. Angle-pieces J are introduced at the of the ,ends B with the barA, which serve as guides to keep the end pieces in their proper relative position.

' The mode of operation in' using this. appa ratus is as follows: The upper or one edge of the side is nailed or secured to the bar A, the lower edge to the bar C, the two bars drawn sufficiently near together for the purpose, and to each of the ends B, one side to'each side of the frame; then the bars are forced'asunder until the requisite strain or stretching of the leather is attained and the levers secured. The two sides arethus distant, from .each' other the thickness of the frame. The frame is then suspended by the'two projecting ends of the bar A. In consequence of the slotted or open end pieces theair may circulate freely between the two sides, and thus-expose both surfaces of each side to'the atmosphere, and greatly facilitate the process. The parts are made adjustable, so that the frame may be used for various sizes of sides. I

I do not broadly cla m an expansible frame for stretching leather, as such I am aware is not new; but

What I do claim as my invention is 1. A frame for stretching leather, consisting of two parallel bars, A C, and the slotted adjustable end pieces B B, combined with mechanism for distending said frame both as to length and depth, substantially as described. v

2. The combination of the open adjustable end pieces B B, the bar A, and adjustable bar C with the stud D, rods E, and a lever, all substantially as and for the purpose described.

SAMUEL D. CASTLE. Witnesses:

JOHN EEARLE, C. V. FORBES.

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